Low security. According to Xicai.com's information, the risky customer in Krypton letter means that the user's account has a low safety factor and has been stolen. The full name of Krypton Information Technology Co., Ltd. is Shanghai Krypton Information Technology Co., Ltd., which is a scientific and technological innovation enterprise with artificial intelligence technology as the core and providing integrated intelligent financial solutions for financial institutions in the fields of intelligent risk control, intelligent marketing and intelligent operation.